$1$. am writing ( Thì HTTD )
$2$. do/ have ( Thì HTĐ )
$3$. listening ( enjoy + v-ing )
$4$. studies ( Thì HTĐ )
$5$. to be ( want + toV )
$6$. to ask ( would + to )
$7$. are ( trousers số nhiều => dùng are )
$8$. slow
$9$. to buy ( Thì TLG )
$10$. are going ( Thì HTD )